The Agilent 81680A Tunable Laser Source delivers mode-hop-free tuning across the S+C band for precision DWDM component characterization. Operating from 1460 nm to 1580 nm with 0.1 pm wavelength resolution and ±0.01 nm absolute accuracy, this instrument provides two distinct optical outputs: a low Source Spontaneous Emission (SSE) channel for crosstalk measurements of densely packed WDM components, and a high-power output. The built-in optical attenuator spans >60 dB, enabling flexible power control across the measurement range. Polarization Maintaining Fiber with Panda connectors ensures consistent state-of-polarization definition for waveguide device testing.
Technical Specifications
Wavelength Performance:
• Range: 1460 nm to 1580 nm (mode-hop free)
• Resolution: 0.1 pm (12.5 MHz at 1550 nm)
• Absolute accuracy: ±0.01 nm
• Stability: ≤±1 pm over 24 hours at constant temperature
• Typical repeatability: ±0.5 pm to ±5 pm
• Tuning speed: 400 ms (1 nm), 600 ms (10 nm), 2.8 s (100 nm)
Optical Output Power:
• Output 1 (Low SSE): >−6 dBm (1520–1570 nm); ≥−10 dBm (1480–1580 nm); ≥−13 dBm (1460–1580 nm)
• Output 2 (High Power): >+5 dBm (1520–1570 nm); ≥+1 dBm (1480–1580 nm); ≥−3 dBm (1460–1580 nm)
• Attenuator range: >60 dB
• Power stability: ±0.01 dB (1 hour); ±0.03 dB typical (24 hours)
• Power repeatability: ±0.01 dB typical
• Flatness versus wavelength: ±0.2 dB typical
Spectral Characteristics:
• Spectral linewidth (coherent control off): 100 kHz typical
• Side-mode suppression ratio: ≥40 dBc (1480–1580 nm)
• Signal-to-SSE ratio: ≥63 dB/nm (1520–1570 nm); ≥58 dB/nm (1480–1580 nm)
– Key Features
• Dual-output architecture optimized for low-noise and high-power measurements
• Wavelength repeatability within ±0.5 pm supports multi-pass test scenarios
• Panda-fiber connectors maintain polarization state throughout test chain
– Typical Applications
• DWDM filter and multiplexer characterization
• Crosstalk measurement in wavelength-selective devices
• Power-dependent optical component testing
– Compatibility & Integration
Designed for mainframe integration with Keysight 8164A systems.
